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首页> 外文期刊>Inorganic materials >Preparation and Thermal Expansion of Calcium Iron Zirconium Phosphates with the NaZr_2(PO_4)_3 Structure
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Preparation and Thermal Expansion of Calcium Iron Zirconium Phosphates with the NaZr_2(PO_4)_3 Structure

机译:NaZr_2(PO_4)_3结构的磷酸钙铁锆的制备及热膨胀

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摘要

Ca0.5(1 + x)Zr2-x Fe (x) (PO4)(3) phosphates have been synthesized by a sol-gel process. The individual compounds and solid solutions obtained crystallize in the NaZr2(PO4)(3) structure (trigonal symmetry, sp. gr. R ). Using high-temperature X-ray diffraction, we have determined their thermal expansion parameters in the temperature range from 25 to 800A degrees C. With increasing x, the magnitudes of their linear thermal expansion coefficients and thermal expansion anisotropy decrease. Most of the synthesized phosphates can be rated as low-thermal-expansion compounds and can be regarded as materials capable of withstanding thermal "stress.".
机译:Ca0.5(1 + x)Zr2-x Fe(x)(PO4)(3)磷酸盐已通过溶胶-凝胶法合成。获得的单个化合物和固溶体在NaZr2(PO4)(3)结构中结晶(三角形对称,sp。gr。R)。使用高温X射线衍射,我们确定了它们在25至800A摄氏度范围内的热膨胀参数。随着x的增加,它们的线性热膨胀系数和热膨胀各向异性的幅度都会减小。大部分合成的磷酸盐都可以被认为是低热膨胀化合物,可以被认为是能够承受热“应力”的材料。

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